has participant water nucleoside hydrogenphosphate nucleoside 5'-phosphate dianion nucleotidase activity molecular_function NSP II RHEA:22140 acid nucleotidase activity nucleotide-specific phosphatase activity deoxyinosine-activated nucleotidase (DIAN) NSP I GO:0008252 nucleotide phosphohydrolase activity deoxyribonucleoside-activated nucleotidase (DAN) Catalysis of the reaction: a nucleotide + H2O = a nucleoside + phosphate. phosphatase activity